Aremcolox 502-1550 low-expansion zirconia phosphate machinable ceramic can be used to produce high-temperature fixtures and insulators for brazing, heat treating, optical, and semiconductor applications up to 1,550°C.

The low coefficient-of-thermal-expansion of 0.5 in./in./°F x 10-6 ensures that the mechanical stress caused by the expansion and contraction of a part experiencing thermal shock does not cause cracking. Low- and medium-density compositions both exhibit good mechanical strength and electrical and thermal insulation. With a compressive strength of greater than 25,000 psi, dielectric strength of 80 V/mil, and thermal conductivity of 5.3 Btu-in./hr-ft2°F, the material is completely inert, will not outgas in ultra-high-vacuum, and does not react with most molten metals, salts, and acids.